MongoDB日志轮转
MongoDB可使用标准的方法实现日志轮转,即获取到当前日志并开启一个新的。为了实现它,mongod实例通过在文件名称末尾添加UTC(GMT
MongoDB可使用标准的方法实现日志轮转,即获取到当前日志并开启一个新的。为了实现它,mongod实例通过在文件名称末尾添加UTC(GMT)时间戳的方式重命名当前的日志文件,然后打开这个新的log文件,关闭之前旧的log 文件,并发送所有新的日志信息到新的log文件中。
Rotation Setps
MongoDB标准的日志轮转方法是通过日志轮转命令,或者让mongod进程接受到一个SIGUSER1信号,以下具体的实现方法
1 开启mongod进程,保证appending enabled
mongod -v --logpath /var/log/mongodb/server1.log --logappend
2 在终端查看是否有mongo日志文件
ls /var/log/mongodb/server1.log*
3 如果是Windows系统,打开mongo shell,进入admin数据库并敲入轮转命令,,即
use admin
db.runCommand( { logRotate : 1 } )
如果是Linux系统,则在终端运行 kill -SIGUSR1
4 再次查看结果是否有新的mongo日志文件生成
ls /var/log/mongodb/server1.log*
My auto script and crontab
以下是我用python写的定时脚本,每天产生一个新的log,超过10天的log自行删除
#!/bin/env python
import sys
import os
import commands
import datetime,time
#get mongo pid
mongo_pid = commands.getoutput("/sbin/pidof mongod")
print mongo_pid
#send Sig to mongo
if mongo_pid != '':
cmd = "/bin/kill -USR1 %s" %(mongo_pid)
print cmd
mongo_rotate = commands.getoutput(cmd)
else:
print "mongod is not running..."
#clean log which > 10 days
str_now = time.strftime("%Y-%m-%d")
dat_now = time.strptime(str_now,"%Y-%m-%d")
array_dat_now = datetime.datetime(dat_now[0],dat_now[1],dat_now[2])
lns = commands.getoutput("/bin/ls --full-time /var/log/mongodb/|awk '{print $6, $9}'")
for ln in lns.split('\n'):
ws = ln.split()
if len(ws) != 2:
continue
ws1 = time.strptime(ws[0],"%Y-%m-%d")
ws2 = datetime.datetime(ws1[0],ws1[1],ws1[2])
if (array_dat_now - ws2).days > 10:
v_del = commands.getoutput("/bin/rm -rf /var/log/mongodb//%s" % (ws[1]))
在root下crontab -e查看定时任务
0 2 * * * /home/jiangjianjian/mongo_log_rotate.py >/home/jiangjianjian/null 2>&1
CentOS编译安装MongoDB
CentOS 编译安装 MongoDB与mongoDB的php扩展
CentOS 6 使用 yum 安装MongoDB及服务器端配置
Ubuntu 13.04下安装MongoDB2.4.3
MongoDB入门必读(概念与实战并重)
Ubunu 14.04下MongoDB的安装指南
《MongoDB 权威指南》(MongoDB: The Definitive Guide)英文文字版[PDF]
Nagios监控MongoDB分片集群服务实战
基于CentOS 6.5操作系统搭建MongoDB服务
MongoDB 的详细介绍:请点这里
MongoDB 的下载地址:请点这里
本文永久更新链接地址:

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



Go language is an efficient, concise and easy-to-learn programming language. It is favored by developers because of its advantages in concurrent programming and network programming. In actual development, database operations are an indispensable part. This article will introduce how to use Go language to implement database addition, deletion, modification and query operations. In Go language, we usually use third-party libraries to operate databases, such as commonly used sql packages, gorm, etc. Here we take the sql package as an example to introduce how to implement the addition, deletion, modification and query operations of the database. Assume we are using a MySQL database.

Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

Hibernate polymorphic mapping can map inherited classes to the database and provides the following mapping types: joined-subclass: Create a separate table for the subclass, including all columns of the parent class. table-per-class: Create a separate table for subclasses, containing only subclass-specific columns. union-subclass: similar to joined-subclass, but the parent class table unions all subclass columns.

HTML cannot read the database directly, but it can be achieved through JavaScript and AJAX. The steps include establishing a database connection, sending a query, processing the response, and updating the page. This article provides a practical example of using JavaScript, AJAX and PHP to read data from a MySQL database, showing how to dynamically display query results in an HTML page. This example uses XMLHttpRequest to establish a database connection, send a query and process the response, thereby filling data into page elements and realizing the function of HTML reading the database.

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.

PHP is a back-end programming language widely used in website development. It has powerful database operation functions and is often used to interact with databases such as MySQL. However, due to the complexity of Chinese character encoding, problems often arise when dealing with Chinese garbled characters in the database. This article will introduce the skills and practices of PHP in handling Chinese garbled characters in databases, including common causes of garbled characters, solutions and specific code examples. Common reasons for garbled characters are incorrect database character set settings: the correct character set needs to be selected when creating the database, such as utf8 or u

Through the Go standard library database/sql package, you can connect to remote databases such as MySQL, PostgreSQL or SQLite: create a connection string containing database connection information. Use the sql.Open() function to open a database connection. Perform database operations such as SQL queries and insert operations. Use defer to close the database connection to release resources.
